:root {
    --bg: #F5F7FF;
    --ink: #1F2740;
    --title: #131A35;
    --muted: #66708A;
    --soft: #9AA4BA;
    --brand: #5B6CFF;
    --brand-2: #7A5CFF;
    --cyan: #00D4FF;
    --gold: #FFC857;
    --deep: #16213E;
    --footer: #0B1024;
    --card: #FFFFFF;
    --border: rgba(91,108,255,.18);
    --shadow: 0 20px 46px rgba(25,43,91,.14);
    --radius: 22px;
    --max: 1240px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif; line-height: 1.75; overflow-x: hidden; }
body.drawer-open { overflow: hidden; }
a { color: var(--brand); text-decoration: none; }
a:hover { color: var(--brand-2); }
img { max-width: 100%; height: auto; display: block; }
button, input, textarea, select { font: inherit; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 12000; background: #fff; color: var(--title); padding: 10px 16px; border-radius: 12px; box-shadow: var(--shadow); }
.skip-link:focus { top: 16px; }
.site-header { position: sticky; top: 0; width: 100%; z-index: 9999; background: rgba(12,18,40,.94); backdrop-filter: blur(12px); box-shadow: 0 8px 26px rgba(25,43,91,.16); }
.header-inner { max-width: 1280px; margin: 0 auto; min-height: 72px; padding: 0 24px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.site-logo { display: inline-flex; align-items: center; gap: 10px; color: #fff; font-weight: 800; letter-spacing: .04em; flex: 0 0 auto; }
.site-logo img { width: 42px; max-height: 44px; object-fit: contain; }
.site-logo:hover { color: #fff; }
.nav-core { display: flex; align-items: center; gap: 10px; }
.nav-core a { color: #EEF2FF; text-decoration: none; border-radius: 999px; padding: 8px 12px; white-space: nowrap; }
.nav-core a:hover, .nav-core a.active { color: #fff; background: rgba(0,212,255,.16); }
.header-actions { display: flex; align-items: center; gap: 12px; flex: 0 0 auto; }
.main-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 12px 24px; border-radius: 999px; color: #fff; font-weight: 800; background: linear-gradient(135deg,#5B6CFF 0%,#7A5CFF 48%,#00D4FF 100%); box-shadow: 0 14px 32px rgba(91,108,255,.22); transition: transform .2s ease, box-shadow .2s ease; }
.main-btn:hover { color: #fff; transform: translateY(-2px); box-shadow: 0 18px 36px rgba(91,108,255,.28); }
.main-btn.compact { min-height: 42px; padding: 9px 18px; }
.secondary-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 10px 22px; border-radius: 999px; color: var(--brand); background: #fff; border: 1px solid var(--border); font-weight: 800; }
.menu-toggle { width: 44px; height: 44px; padding: 10px; border: 1px solid rgba(255,255,255,.16); border-radius: 14px; background: rgba(255,255,255,.08); cursor: pointer; display: inline-flex; flex-direction: column; justify-content: center; gap: 5px; }
.menu-toggle span { width: 100%; height: 2px; background: #fff; border-radius: 2px; }
.mobile-header { display: none; }
.drawer-mask { position: fixed; inset: 0; z-index: 10000; background: rgba(5,9,24,.62); opacity: 0; visibility: hidden; transition: .25s ease; }
.site-drawer { position: fixed; z-index: 10001; top: 0; right: 0; width: min(390px, 92vw); height: 100dvh; padding: 22px; background: #fff; transform: translateX(105%); transition: transform .28s ease; overflow-y: auto; box-shadow: -24px 0 70px rgba(10,18,50,.28); }
.drawer-open .drawer-mask { opacity: 1; visibility: visible; }
.drawer-open .site-drawer { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; padding-bottom: 18px; border-bottom: 1px solid var(--border); }
.drawer-head .site-logo { color: var(--title); }
.drawer-close { width: 42px; height: 42px; border: 0; border-radius: 50%; background: #EEF1FF; color: var(--title); font-size: 28px; cursor: pointer; }
.drawer-nav { display: grid; gap: 8px; margin-top: 18px; }
.drawer-nav a { display: flex; align-items: center; justify-content: space-between; padding: 12px 14px; border-radius: 14px; color: var(--ink); background: #F8F9FF; }
.drawer-nav a:hover, .drawer-nav a.active { color: var(--brand); background: #EEF1FF; }
.drawer-nav em { font-size: 12px; font-style: normal; color: var(--soft); }
.drawer-note { margin-top: 18px; padding: 16px; border-radius: 16px; background: #FFF8E7; color: #6B5630; font-size: 14px; }
main { min-height: 60vh; }
.container { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; }
.section { padding: 76px 0; }
.section-tight { padding: 48px 0; }
.section-soft { background: linear-gradient(180deg, rgba(234,247,255,.78), rgba(245,247,255,0)); }
.section-deep { color: #EEF2FF; background: linear-gradient(140deg, #11182F, #16213E 62%, #1C2750); }
.section-deep h2, .section-deep h3, .section-deep .section-title { color: #fff; }
.section-head { max-width: 760px; margin-bottom: 30px; }
.section-head.center { text-align: center; margin-left: auto; margin-right: auto; }
.section-kicker { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 8px; color: #7A5CFF; font-weight: 800; letter-spacing: .08em; font-size: 13px; text-transform: uppercase; }
.section-kicker::before { content: ""; width: 28px; height: 3px; border-radius: 9px; background: linear-gradient(90deg,var(--brand),var(--cyan)); }
h1, h2, h3, .section-title { color: var(--title); line-height: 1.25; margin-top: 0; }
h1 { font-size: clamp(40px,7vw,82px); letter-spacing: -.04em; margin-bottom: 20px; }
h2 { font-size: clamp(28px,4vw,46px); margin-bottom: 16px; }
h3 { font-size: 22px; margin-bottom: 10px; }
p { margin: 0 0 16px; }
.lead { color: var(--muted); font-size: clamp(17px,2vw,20px); }
.hero { position: relative; overflow: hidden; padding: 88px 0 74px; background: radial-gradient(circle at 12% 10%, rgba(122,92,255,.22), transparent 32%), radial-gradient(circle at 88% 20%, rgba(0,212,255,.22), transparent 28%), linear-gradient(135deg,#F9F7FF,#EAF7FF 52%,#FFF7FB); }
.hero::before, .hero::after { content: ""; position: absolute; border-radius: 50%; filter: blur(2px); pointer-events: none; }
.hero::before { width: 260px; height: 260px; right: -90px; top: 80px; background: rgba(255,200,87,.16); }
.hero::after { width: 180px; height: 180px; left: -60px; bottom: -70px; background: rgba(217,79,112,.12); }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.03fr .97fr; gap: 54px; align-items: center; }
.hero-copy { max-width: 650px; }
.hero-subtitle { font-size: clamp(22px,3vw,34px); color: var(--brand-2); font-weight: 800; margin-bottom: 18px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin: 28px 0 24px; }
.hero-points { display: flex; flex-wrap: wrap; gap: 10px; }
.hero-points span, .tag, .pill { display: inline-flex; align-items: center; border-radius: 999px; padding: 7px 12px; font-size: 14px; font-weight: 700; }
.hero-points span { color: var(--deep); background: rgba(255,255,255,.78); border: 1px solid rgba(91,108,255,.14); }
.hero-visual { position: relative; }
.hero-visual .visual-frame { padding: 16px; border-radius: 34px; background: rgba(255,255,255,.78); border: 1px solid rgba(255,255,255,.9); box-shadow: 0 34px 80px rgba(44,62,140,.22); transform: rotate(1.5deg); }
.hero-visual img { width: 100%; max-height: 620px; object-fit: contain; border-radius: 24px; }
.floating-card { position: absolute; padding: 14px 16px; border-radius: 18px; background: rgba(17,24,47,.92); color: #fff; box-shadow: var(--shadow); }
.floating-card.one { left: -28px; bottom: 36px; }
.floating-card.two { right: -18px; top: 34px; background: rgba(255,255,255,.94); color: var(--title); }
.highlight-bar { margin-top: -26px; position: relative; z-index: 2; }
.highlight-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 14px; padding: 18px; border-radius: 24px; background: rgba(255,255,255,.92); border: 1px solid rgba(255,255,255,.85); box-shadow: var(--shadow); backdrop-filter: blur(12px); }
.highlight-item { padding: 14px 16px; border-left: 3px solid var(--brand); }
.highlight-item:nth-child(2) { border-color: var(--cyan); }
.highlight-item:nth-child(3) { border-color: var(--gold); }
.highlight-item:nth-child(4) { border-color: #D94F70; }
.highlight-item strong { display: block; color: var(--title); margin-bottom: 4px; }
.highlight-item p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.65; }
.channel-cloud { display: flex; flex-wrap: wrap; gap: 12px; }
.channel-pill { min-width: 185px; flex: 1 1 180px; padding: 14px 16px; border-radius: 18px; background: #fff; border: 1px solid var(--border); box-shadow: 0 12px 30px rgba(25,43,91,.08); }
.channel-pill strong { display: block; color: var(--title); margin-bottom: 3px; }
.channel-pill small { display: block; color: var(--muted); line-height: 1.55; }
.channel-pill a { display: inline-block; margin-top: 6px; font-weight: 800; font-size: 14px; }
.split { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 24px; align-items: stretch; }
.triple { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 22px; }
.grid-4 { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 20px; }
.card, .zone-card, .info-card, .review-card { background: #fff; border: 1px solid var(--border); box-shadow: var(--shadow); border-radius: var(--radius); }
.card, .info-card { padding: 26px; }
.zone-card { overflow: hidden; display: flex; flex-direction: column; }
.zone-card .image-wrap { padding: 16px 16px 0; }
.zone-card img, .content-img, .app-section img { width: 100%; height: auto; object-fit: contain; border-radius: 18px; }
.zone-card .zone-content { padding: 24px; display: flex; flex-direction: column; flex: 1; }
.zone-card .zone-content > a:last-child { margin-top: auto; }
.card-list { margin: 16px 0 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.card-list li { position: relative; padding-left: 20px; color: var(--muted); }
.card-list li::before { content: ""; position: absolute; left: 0; top: .68em; width: 8px; height: 8px; border-radius: 50%; background: linear-gradient(135deg,var(--brand),var(--cyan)); }
.text-link { display: inline-flex; align-items: center; gap: 5px; color: var(--brand); font-weight: 800; }
.text-link::after { content: "→"; }
.media-row { display: grid; grid-template-columns: .92fr 1.08fr; gap: 44px; align-items: center; }
.media-row.reverse { grid-template-columns: 1.08fr .92fr; }
.media-row.reverse .media-image { order: 2; }
.media-image { padding: 18px; border-radius: 28px; background: #fff; box-shadow: var(--shadow); border: 1px solid var(--border); }
.media-image img { width: 100%; max-height: 520px; object-fit: contain; border-radius: 20px; }
.metrics { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; margin-top: 24px; }
.metric { padding: 18px; border-radius: 16px; background: rgba(91,108,255,.08); }
.metric strong { display: block; color: var(--title); font-size: 20px; }
.metric span { color: var(--muted); font-size: 14px; }
.safety-panel { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; padding: 28px; border-radius: 30px; background: linear-gradient(135deg,#11182F,#1B2852); color: #EEF2FF; overflow: hidden; }
.safety-panel h2, .safety-panel h3 { color: #fff; }
.safety-panel img { width: 100%; max-height: 380px; object-fit: contain; border-radius: 22px; background: rgba(255,255,255,.06); }
.review-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 20px; }
.review-card { padding: 24px; }
.review-card p { color: var(--muted); }
.review-card strong { color: var(--title); }
.faq-list { display: grid; gap: 14px; }
details { background: #fff; border: 1px solid var(--border); border-radius: 18px; padding: 0 20px; box-shadow: 0 10px 28px rgba(25,43,91,.08); }
summary { cursor: pointer; list-style: none; padding: 18px 36px 18px 0; color: var(--title); font-weight: 800; position: relative; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 0; top: 13px; font-size: 28px; color: var(--brand); }
details[open] summary::after { content: "−"; }
details p { padding: 0 0 18px; color: var(--muted); }
.notice { padding: 22px; border-radius: 20px; background: #FFF4D6; border: 1px solid rgba(255,200,87,.5); color: #604A22; }
.page-hero { padding: 72px 0 56px; background: radial-gradient(circle at 80% 0, rgba(0,212,255,.18), transparent 30%), linear-gradient(135deg,#F6F2FF,#EAF7FF); }
.page-hero-grid { display: grid; grid-template-columns: 1fr .82fr; gap: 44px; align-items: center; }
.page-hero h1 { font-size: clamp(38px,6vw,68px); }
.page-hero img { width: 100%; max-height: 470px; object-fit: contain; border-radius: 28px; padding: 14px; background: rgba(255,255,255,.78); box-shadow: var(--shadow); }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 8px; color: var(--muted); font-size: 14px; margin-bottom: 14px; }
.breadcrumb a { font-weight: 700; }
.content-grid { display: grid; grid-template-columns: minmax(0,1fr) 330px; gap: 28px; align-items: start; }
.article-card { padding: 32px; background: #fff; border-radius: 26px; border: 1px solid var(--border); box-shadow: var(--shadow); }
.article-card h2 { font-size: 30px; margin-top: 34px; }
.article-card h2:first-child { margin-top: 0; }
.article-card p { color: #44506C; }
.side-stack { display: grid; gap: 18px; position: sticky; top: 96px; }
.side-card { padding: 22px; background: #fff; border: 1px solid var(--border); border-radius: 20px; box-shadow: 0 14px 34px rgba(25,43,91,.1); }
.side-card h2 { font-size: 20px; }
.side-card a { display: block; padding: 8px 0; border-bottom: 1px dashed rgba(91,108,255,.18); }
.side-card a:last-child { border-bottom: 0; }
.steps { counter-reset: step; display: grid; gap: 14px; margin: 20px 0; }
.step { counter-increment: step; position: relative; padding: 18px 18px 18px 64px; border-radius: 18px; background: #F7F8FF; }
.step::before { content: counter(step); position: absolute; left: 18px; top: 17px; width: 32px; height: 32px; border-radius: 50%; display: grid; place-items: center; color: #fff; font-weight: 800; background: linear-gradient(135deg,var(--brand),var(--cyan)); }
.quote { margin: 22px 0; padding: 20px; border-left: 4px solid var(--brand); border-radius: 0 16px 16px 0; background: #EEF1FF; color: #3F4970; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; min-width: 620px; background: #fff; border-radius: 18px; overflow: hidden; }
th, td { padding: 15px; text-align: left; border-bottom: 1px solid var(--border); }
th { color: var(--title); background: #EEF1FF; }
.site-footer { background: var(--footer); color: #EEF2FF; padding: 58px 0 24px; }
.footer-grid { width: min(var(--max),calc(100% - 40px)); margin: 0 auto; display: grid; grid-template-columns: 1.4fr repeat(3,1fr); gap: 34px; }
.footer-grid h2 { color: #fff; font-size: 18px; }
.footer-grid a { color: #C9D1EA; display: block; margin: 8px 0; }
.footer-grid a:hover { color: #fff; }
.footer-brand p { color: #AAB5D2; max-width: 420px; }
.footer-bottom { width: min(var(--max),calc(100% - 40px)); margin: 34px auto 0; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.1); display: flex; align-items: center; justify-content: space-between; gap: 20px; color: #AAB5D2; font-size: 14px; }
.footer-bottom p { margin: 0; }
.footer-bottom div { display: flex; gap: 16px; }
.footer-bottom a { color: #C9D1EA; }
.mobile-bottom-nav { display: none; }
@media (max-width: 1080px) {
    .nav-core { gap: 2px; }
    .nav-core a { padding: 7px 8px; font-size: 14px; }
    .hero-grid, .page-hero-grid { gap: 30px; }
    .triple, .review-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
    .grid-4 { grid-template-columns: repeat(2,minmax(0,1fr)); }
    .content-grid { grid-template-columns: 1fr; }
    .side-stack { position: static; grid-template-columns: repeat(2,minmax(0,1fr)); }
}
@media (max-width: 820px) {
    .desktop-header { display: none; }
    .mobile-header { display: flex; padding: 0 14px; gap: 10px; }
    .mobile-logo { position: absolute; left: 50%; transform: translateX(-50%); }
    .mobile-logo span { display: none; }
    .mobile-logo img { width: 38px; }
    .section { padding: 58px 0; }
    .hero { padding: 58px 0 66px; }
    .hero-grid, .page-hero-grid, .media-row, .media-row.reverse, .safety-panel { grid-template-columns: 1fr; }
    .hero-copy { text-align: center; margin: 0 auto; }
    .hero-actions, .hero-points { justify-content: center; }
    .hero-visual { max-width: 620px; margin: 0 auto; }
    .media-row.reverse .media-image { order: 0; }
    .highlight-grid { grid-template-columns: repeat(2,1fr); }
    .split { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: repeat(2,1fr); }
    .footer-brand { grid-column: 1 / -1; }
    .mobile-bottom-nav { position: fixed; z-index: 9000; left: 12px; right: 12px; bottom: max(10px, env(safe-area-inset-bottom)); display: grid; grid-template-columns: repeat(4,1fr); background: rgba(11,16,36,.94); backdrop-filter: blur(12px); border: 1px solid rgba(255,255,255,.12); border-radius: 18px; box-shadow: 0 18px 50px rgba(5,10,30,.3); }
    .mobile-bottom-nav a { color: #C9D1EA; text-align: center; padding: 11px 6px; font-size: 13px; }
    .mobile-bottom-nav a.active { color: #fff; background: rgba(91,108,255,.28); border-radius: 16px; }
    body { padding-bottom: 82px; }
}
@media (max-width: 620px) {
    .container { width: min(100% - 28px,var(--max)); }
    .header-inner { min-height: 64px; }
    .mobile-header .main-btn { min-height: 38px; padding: 7px 13px; font-size: 13px; }
    h1 { font-size: 48px; }
    .page-hero h1 { font-size: 40px; }
    .hero-subtitle { font-size: 24px; }
    .hero-actions { flex-direction: column; align-items: stretch; }
    .hero-actions a { width: 100%; }
    .floating-card { display: none; }
    .highlight-grid, .triple, .grid-4, .review-grid, .metrics, .side-stack { grid-template-columns: 1fr; }
    .highlight-bar { margin-top: -18px; }
    .channel-pill { min-width: 100%; }
    .article-card { padding: 22px; }
    .safety-panel { padding: 20px; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-brand { grid-column: auto; }
    .footer-bottom { flex-direction: column; align-items: flex-start; }
}